Files
jupyterhub/examples/service-fastapi/app/service.py
2021-04-07 18:17:25 +00:00

71 lines
2.2 KiB
Python

import os
from fastapi import APIRouter
from fastapi import Depends
from fastapi import Form
from fastapi import Request
from .client import get_client
from .models import AuthorizationError
from .models import HubApiError
from .models import User
from .security import get_current_user
# APIRouter prefix cannot end in /
service_prefix = os.getenv("JUPYTERHUB_SERVICE_PREFIX", "").rstrip("/")
router = APIRouter(prefix=service_prefix)
@router.post("/get_token", include_in_schema=False)
async def get_token(code: str = Form(...)):
"Callback function for OAuth2AuthorizationCodeBearer scheme"
# The only thing we need in this form post is the code
# Everything else we can hardcode / pull from env
async with get_client() as client:
redirect_uri = (
os.environ["PUBLIC_HOST"] + os.environ["JUPYTERHUB_OAUTH_CALLBACK_URL"],
)
data = {
"client_id": os.environ["JUPYTERHUB_CLIENT_ID"],
"client_secret": os.environ["JUPYTERHUB_API_TOKEN"],
"grant_type": "authorization_code",
"code": code,
"redirect_uri": redirect_uri,
}
resp = await client.post("/oauth2/token", data=data)
### resp.json() is {'access_token': <token>, 'token_type': 'Bearer'}
return resp.json()
@router.get("/")
async def index():
"Non-authenticated function that returns {'Hello': 'World'}"
return {"Hello": "World"}
# response_model and responses dict translate to OpenAPI (Swagger) hints
# compare and contrast what the /me endpoint looks like in Swagger vs /debug
@router.get(
"/me",
response_model=User,
responses={401: {'model': AuthorizationError}, 400: {'model': HubApiError}},
)
async def me(user: User = Depends(get_current_user)):
"Authenticated function that returns the User model"
return user
@router.get("/debug")
async def index(request: Request, user: User = Depends(get_current_user)):
"""
Authenticated function that returns a few pieces of debug
* Environ of the service process
* Request headers
* User model
"""
return {
"env": dict(os.environ),
"headers": dict(request.headers),
"user": user,
}